OSX: Fix capitalization of several imports and includes

CMakeLists.txt

@@ -1348,7 +1348,7 @@ if(USE_X11)
 	)
 endif()
 if(USE_COCOA)
-	TARGET_LINK_LIBRARIES(openclonk "-framework Cocoa -framework AppKit -framework Quartz -framework OpenAL -framework AudioToolBox")
+	TARGET_LINK_LIBRARIES(openclonk "-framework Cocoa -framework AppKit -framework Quartz -framework OpenAL -framework AudioToolbox")
 endif()
 if (WIN32)
 	# CMake is too incompetent to check whether these libraries can be linked to

src/graphics/C4DrawGLMac.mm

@@ -16,12 +16,12 @@
 #include <C4Include.h>
 #include <C4GraphicsSystem.h>
 #include <C4MouseControl.h>
-#include <C4GUI.h>
+#include <C4Gui.h>
 #include <C4Game.h>
 #include <C4Viewport.h>
 #include <C4ViewportWindow.h>
 #include <C4Console.h>
-#include <C4Fullscreen.h>
+#include <C4FullScreen.h>
 #include <C4PlayerList.h>
 #include <C4Gui.h>
 #include <C4Landscape.h>

src/platform/C4AppDelegate+MainMenuActions.mm

@@ -14,7 +14,7 @@
  */
 
 #include <C4Include.h>
-#include <C4Fullscreen.h>
+#include <C4FullScreen.h>
 #include <C4GraphicsSystem.h>
 #include <C4Viewport.h>
 #include <C4Console.h>

src/platform/C4WindowController.mm

@@ -14,7 +14,7 @@
  */
 
 #include <C4Include.h>
-#include <C4Fullscreen.h>
+#include <C4FullScreen.h>
 #include <C4GraphicsSystem.h>
 #include <C4Viewport.h>
 #include <C4ViewportWindow.h>

src/platform/C4WindowMac.mm

@@ -21,7 +21,7 @@
 #include <C4Rect.h>
 #include <C4FullScreen.h>
 
-#import <Appkit/AppKit.h>
+#import <AppKit/AppKit.h>
 #import <C4WindowController.h>
 #import <C4DrawGLMac.h>